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