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