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