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