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)(17,18,23,25)(19,28,29,45)(20,26,22,37)(21,33,36,47)(24,39,40,31)(27,32,43,35)(30,46,38,44)(34,41,48,42)(1,3)(2,6)(4,10)(5,11)(7,13)(8,9)(12,16)(14,15)(19,29)(24,40)(28,45)(30,38)(31,39)(34,48)(41,42)(44,46) 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)(25,40)(26,41)(27,44)(28,33)(31,35)(32,39)(36,48)(37,42)(43,46)(45,47)(3,11)(6,9)(10,16)(13,15)(18,25)(24,40)(26,37)(27,43)(28,45)(33,47)(41,42)(44,46) 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)(24,41,40,42)(27,33,43,47)(28,46,45,44)(31,34,39,48)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.