One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,12)(7,13)(8,15)(9,16)(10,14)(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(1,2,5,7)(3,9,11,15)(4,13,12,6)(8,14,16,10)(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)(2,7)(6,13)(8,16)(9,15)(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(1,3,5,11)(2,8,7,16)(4,14,12,10)(6,15,13,9)(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.