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