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