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