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