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