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