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