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