One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,11,13,8)(4,14,15,9)(5,10,16,12)(17,18,22,25)(19,26,20,23)(21,29,30,24)(27,31,28,32)(33,34)(35,36)(37,40)(38,41)(39,42)(43,44)(45,46)(47,48)(2,7)(4,15)(8,11)(10,12)(17,19,22,20)(18,23,25,26)(21,27,30,28)(24,31,29,32)(33,35)(34,36)(37,43)(38,39)(40,44)(41,42)(45,48)(46,47)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,31)(29,30)(33,34)(35,42)(36,39)(37,40)(38,41)(43,48)(44,47)(45,46) involution — undirected(1,3)(2,8)(4,10)(5,14)(6,13)(7,11)(9,16)(12,15)(17,18)(19,23)(20,26)(21,24)(22,25)(27,31)(28,32)(29,30)(33,34)(35,36)(37,45)(38,41)(39,42)(40,46)(43,48)(44,47) involution — undirected(1,4,6,15)(2,9,7,14)(3,12,13,10)(5,11,16,8)(17,20,22,19)(18,23,25,26)(21,28,30,27)(24,31,29,32)(33,36)(34,39)(35,41)(37,44)(38,42)(40,47)(43,45)(46,48)(1,5)(2,10)(3,9)(4,11)(6,16)(7,12)(8,15)(13,14)(17,21,22,30)(18,24,25,29)(19,27,20,28)(23,31,26,32)(33,37)(34,40)(35,43)(36,44)(38,46)(39,47)(41,45)(42,48)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.