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