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