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