One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,10,4,7)(5,13,14,8)(11,15,12,16)(17,18,23,22)(19,25,29,24)(20,30,28,26)(21,27,32,31)(33,34,38,41)(35,39,45,42)(36,37,40,46)(43,44,47,48)(1,2)(3,7)(4,10)(5,8)(6,9)(11,15)(12,16)(13,14)(17,19,23,29)(18,24,22,25)(20,21,28,32)(26,27,30,31)(33,35)(34,39)(36,43)(37,44)(38,45)(40,47)(41,42)(46,48)(1,3,6,4)(2,7,9,10)(5,12,14,11)(8,16,13,15)(17,19,23,29)(18,25,22,24)(20,21,28,32)(26,31,30,27)(33,34,38,41)(35,42,45,39)(36,37,40,46)(43,48,47,44)(1,2)(3,7)(4,10)(5,8)(6,9)(11,15)(12,16)(13,14)(17,20)(18,26)(19,21)(22,30)(23,28)(24,27)(25,31)(29,32)(33,36)(34,37)(35,43)(38,40)(39,44)(41,46)(42,48)(45,47) involution — undirected(1,4,6,3)(2,7,9,10)(5,12,14,11)(8,15,13,16)(17,21)(18,27)(19,28)(20,29)(22,31)(23,32)(24,30)(25,26)(33,37)(34,40)(35,44)(36,41)(38,46)(39,47)(42,43)(45,48)(1,5,6,14)(2,8,9,13)(3,11,4,12)(7,15,10,16)(17,22,23,18)(19,25,29,24)(20,30,28,26)(21,31,32,27)(33,35)(34,39)(36,43)(37,44)(38,45)(40,47)(41,42)(46,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.