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