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